Some style nits. Also clarify in the docstrings what __sizeof__ does.
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index d3a7cb9..6b15131 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -2052,7 +2052,7 @@
PyDoc_STRVAR(getitem__doc__, "x.__getitem__(y) <==> x[y]");
PyDoc_STRVAR(sizeof__doc__,
-"D.__sizeof__() -> size of D in bytes");
+"D.__sizeof__() -> size of D in memory, in bytes");
PyDoc_STRVAR(get__doc__,
"D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None.");